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Creating Regular Matrices of Aligned Silica Nanohelices: Theory and Realization

hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorGAO, Jie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorSEMLALI, Sanaa
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorHUNEL, Julien
hal.structure.identifierInstitut des matériaux de Paris-Centre [IMPC]
dc.contributor.authorMONTERO, David
hal.structure.identifierLaboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes [LCP-A2MC]
dc.contributor.authorBATTIE, Yann
hal.structure.identifierLaboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes [LCP-A2MC]
dc.contributor.authorGONZALEZ-RODRIGUEZ, David
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDRISKO, Glenna
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorPOUGET, Emilie
dc.date.issued2020-01-06
dc.identifier.issn0897-4756
dc.description.abstractEnHere, we exercise nanoscale control over the assembly of highly anisotropic silica helices using convective flow by using the physical properties occurring during evaporation-induced self-assembly. Organizing and patterning such chiral elongated objects over large surfaces in a controllable and reproducible fashion are challenging but desirable to optimize the performance of biomimetic structures, nanosensors (mechanical properties of helices), or optical materials (chiral objects have asymmetric interactions with light as absorption is different for left- and right-handed polarization). The coupling of evaporation forces and physicochemical solution properties induce specific helix alignment, and the stick–slip phenomenon produces a periodical deposition of bands with controllable and regular spacing. Helix orientation, packing density, and spacing can then be tuned. We observe the effect of polymer additives, silica helix concentration, and substrate withdrawal speed on the quality and orientation of the helix deposition. Theoretical modeling based on capillary hydrodynamics is developed to describe the relationship between evaporative conditions and pitch distance, the band width of the stick region, and the helix orientation.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enSilica
dc.subject.enElongated nano-object
dc.subject.enHelix
dc.subject.enEvaporation-induced self-assembly
dc.subject.enDip-coating
dc.subject.enCapillarity theory
dc.title.enCreating Regular Matrices of Aligned Silica Nanohelices: Theory and Realization
dc.typeArticle de revue
dc.identifier.doi10.1021/acs.chemmater.9b04372
dc.subject.halPhysique [physics]
bordeaux.journalChemistry of Materials
bordeaux.page821-829
bordeaux.volume32
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-02464935
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02464935v1
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